CH203022A - Process for the preparation of 2-mercapto-thiazolidine-2-methyl ether. - Google Patents
Process for the preparation of 2-mercapto-thiazolidine-2-methyl ether.Info
- Publication number
- CH203022A CH203022A CH203022DA CH203022A CH 203022 A CH203022 A CH 203022A CH 203022D A CH203022D A CH 203022DA CH 203022 A CH203022 A CH 203022A
- Authority
- CH
- Switzerland
- Prior art keywords
- thiazolidine
- preparation
- methyl ether
- mercapto
- methyl
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D277/00—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings
- C07D277/02—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings
- C07D277/04—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having no double bonds between ring members or between ring members and non-ring members
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Thiazole And Isothizaole Compounds (AREA)
Description
Verfahren zur Herstellung von 2-Mereapto-thiazolidin-2-methyläther. Im Hauptpatent ist angegeben, dass man durch Umsetzung von Xanthogenaten mit Ithylenimin 2-Mercapto-thiazolidinderivate erhalten kann.
Es wurde weiter ,gefunden, dass man diese Thiazolin@derävate auch erhal ten kann, wenn man die Umsetzung der Yanthogenate nicht mit ÄthyJenimindurch- führt,sondern mit den Ausgangsmaterialien für .die Bildung von Äthylenimin, unter BC- d@ingungen, bei welchen diese,Stoffe Äthylen imin ergeben. Als solches Ausgangsmaterial kann z.
B. Halogenäthylamin benutzt werden. Dies ist insofern von Bedeutung, als 11aJogen- äthylamine bedeutend einfacher zugänglich sijl. als das Äthylenimin selbst.<B>Als,</B> Halogen- äthylamine kommen Idas a-Chlor-, a-Brom- oder a-Jodäthyl-,B-#amin in Betracht.
Gegenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung von 2-Mer- capto-tthiazolidin-2-methyläther, welches da durch gekennzeichnet ist, -dass man ein Mano- halogenäthylaanin in Gegenwart einer äqui- valenten Menge Lauge mit Methylgantho gerat umsetzt.
Da die freien Monohalogen- äthylamine ziemlioh unbeständig sind; wird bei der Umsetzung zweckmässig von den Chlor-, Brom- bezw. Jodhydraten der Meno- halogenüthylamine ausgegangen und die Base im Umsetzgemisch selbst mit mindestens der theoretischen Menge an Alkali oder einem Überschuss in. Freiheit ,
gesetzt. Fis ist an gebracht, falls man von ,dem chlorsubstituier- ten Amin ausgeht, bei erhöhter Temperatur zu arbeiten, um eine ;genügend rasche Um setzung zu bekommen.
<I>Beispiel:</I> 205g Bromäthylaminbromhydrat werden in einer Lösung von 40g NaOH in 400 cm' Wasser gelöst und zu dieser Lösung 130 g Na-Methylgantho:genat, gelöst in .3,00 em3 ,Me- thanol, gegeben. Die Mischung wird 4,Stun- den auf<B>55'</B> C erwärmt.
Nach dem Abkühlen wird das gebildete hochviskose 01 abgetrennt, mit Wasser gewaschen und zwecks R,ein- darstellun,g durch ?-stündiges Erhitzen im Vakuum auf<B>80'</B> C vom gelösten Wasser bezw. Methanol befreit. Die Analysenwerte des Öls stimmen auf )lercaptothiazolidin- methyläther.
Process for the preparation of 2-mereapto-thiazolidine-2-methyl ether. The main patent states that 2-mercapto-thiazolidine derivatives can be obtained by reacting xanthates with ethyleneimine.
It has also been found that these thiazoline derivatives can also be obtained if the reaction of the yanthates is not carried out with ethylenimine, but with the starting materials for the formation of ethylenimine, under conditions in which these , Substances result in ethylene imine. As such a starting material, e.g.
B. Halogenethylamine can be used. This is important insofar as 11aJogenethylamine is much more easily accessible. as the ethyleneimine itself. As haloethylamines, α-chlorine, α-bromine or α-iodoethyl, B- # amine come into consideration.
The present patent relates to a process for the preparation of 2-mercapto-thiazolidine-2-methyl ether, which is characterized in that a mano-halogenoethylaanine is reacted with methyl gantho in the presence of an equivalent amount of lye.
Since the free monohaloethylamines are quite unstable; is useful in the implementation of the chlorine, bromine or. Iodohydrates of Meno- halogenüthylamine started out and the base in the reaction mixture itself with at least the theoretical amount of alkali or an excess in. Freedom,
set. If one starts from the chlorine-substituted amine, it is advisable to work at an elevated temperature in order to achieve a sufficiently rapid conversion.
<I> Example: </I> 205 g of bromoethylamine bromohydrate are dissolved in a solution of 40 g of NaOH in 400 cm of water, and 130 g of sodium methyl ganthogenate, dissolved in .3.00 em3, methanol, are added to this solution. The mixture is heated to 55 ° C. for 4 hours.
After cooling, the highly viscous oil formed is separated off, washed with water and, for the purpose of R, representation, g by heating in vacuo to <B> 80 '</B> C from the dissolved water or. Methanol freed. The analysis values of the oil agree with) lercaptothiazolidine methyl ether.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE203022X | 1936-01-10 | ||
CH198407T | 1936-06-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH203022A true CH203022A (en) | 1939-02-15 |
Family
ID=25723094
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH203022D CH203022A (en) | 1936-01-10 | 1936-06-03 | Process for the preparation of 2-mercapto-thiazolidine-2-methyl ether. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH203022A (en) |
-
1936
- 1936-06-03 CH CH203022D patent/CH203022A/en unknown
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